RFC: Short circuit bfd_map_over_sections

[Ian Lance Taylor]

"H. J. Lu" <hjl@lucon.org> writes:

> bfd_map_over_sections is used to call a function on each section in
> a bfd. However, there are many places where bfd_map_over_sections
> is called to find something. It isn't necessary to go through all
> sections once it is found. I'd like to modify bfd_map_over_sections to
> 
> void
> bfd_map_over_sections (bfd *abfd,
> 		       bfd_boolean (*operation) (bfd *, asection *, void *),
> 		       void *user_storage)
> {
>   asection *sect;
> 
>   for (sect = abfd->sections; sect != NULL; i++, sect = sect->next)
>     if (!(*operation) (abfd, sect, user_storage))
>       break;
> }
> 
> Any comments?

I don't think it would be wise to change bfd_map_over_sections at this
point.  It is widely used, including by GDB.  A lot of code would have
to changed to have the function argument return true.

I think that, unfortunately, we should add a new function for this.

Ian